Frequency Difference Thermally and Electrically Tunable Dual-Frequency Nd:YAG/LiTaO3 Microchip Laser

Applied Sciences

Haiyang Zhang¹  Changming Zhao¹  Kun Gui¹  Zilong Zhang¹  Yuxiao Xing¹ 

[1] Beijing Institute of Technology, School of Optics and Photonics, 5 South Zhongguancun Street, Beijing 100081, China;

关键词: microwave photonics;    tunable dual frequency;    microchip laser;    electro-optic effect;    thermo-optic effect;   

DOI  :  10.3390/app9101969

来源: DOAJ

【 摘 要 】

This study presents a dual-frequency microchip laser with a thermo-optically and electro-optically tuned frequency difference. The dual-frequency microchip cavity is formed by bonding a Lithium tantalite (LiTaO₃, LTO) crystal chip and a neodymium-doped yttrium aluminum garnet (Nd:YAG) crystal chip. A single longitudinal mode is generated by the Nd:YAG crystal and split into two frequencies with perpendicular polarizations due to birefringent effect in the LTO chip. Furthermore, continuous beat frequency tuning at different scales is realized by adjusting the temperature and voltage applied to the LTO crystal. A maximum beat frequency of up to 27 GHz is obtained, and the frequency difference lock-in phenomenon is observed below the frequency difference of 405 MHz.

【 授权许可】

Unknown